英文關鍵字
absorbers
amusement
bumping
bumps
car
collisions
crashes
drivers
electric
fun
headlights
metallic
motor
oval
perimeter
random
ride
rim
ring
rubber
seats
shiny
shocks
steering
toy
trajectory
英文關鍵字
absorbers
amusement
bumping
bumps
car
collisions
crashes
drivers
electric
fun
headlights
metallic
motor
oval
perimeter
random
ride
rim
ring
rubber
seats
shiny
shocks
steering
toy
trajectory